(-3,-7) and (-2,-4) i know we use the distance formula but when i do i get a wacky answer that does not match my choices. help please..the final answer should end up in radical form

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Posted by Admin in Wednesday, February 2nd 2011 1 comment so far

(-3,-7) and (-2,-4) i know we use the distance formula but when i do i get a wacky answer that does not match my choices. help please..the final answer should end up in radical form

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using distance formula:

sqrt[ (y1 - y2)^2 + (x1 - x2)^2 ]

sqrt [(-7 + 4) + (-3 + 2)] = sqrt [ (9) + (1)] = sqrt [10]

hope this helps